Bend a piece of wire into a hook shape. Hammer it into the end of the mount you wish to hang, or screw a commercial ceiling hook hanger into the top of the mount.
Soak the orchid mount and a pad of sphagnum moss overnight. If you are using hardware cloth for your mount, soak the sphagnum moss only.
Place the sphagnum moss on the mount's surface. Place the orchid on the moss, and spread out the roots on top. The roots will establish themselves in the moss before spreading to the moss and, eventually, the tree branch.
Tie fishing line or plant ties around the roots and the mount to secure the orchid in place.
Pass a wire through the orchid mount's hook, and hang it in a humid place, such as a greenhouse. You can hang the wire from the greenhouse rafters, on a tree branch or on a section of mesh screening.
Cut off the fishing line or ties once the roots grow into the mount. This usually takes about two weeks.